Outside zone is a rock. It can get you nice solid gains, it can get you huge plays, it just works. If you are a NFL or college team and you don't run outside zone, you are a rare breed indeed. I would be willing to bet that MSU has called this play (some variation on it at least) every game, under both Treadwell and Roushar. So let's break down what it is, and why MSU uses it.